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HackerRank Day 6: Bitwise Operators 10 days of javascript solution

YASH PAL, 31 July 2024

In this HackerRank Day 6: Bitwise Operators 10 Days of the javascript problem We define S to be a sequence of distinct sequential integers from 1 to n; in other words, s = {1,2,3,…, n}. We want to know the maximum bitwise AND value of any two integers, a and b (where a<b), in sequence S that is also less than a given integer, k.

Complete the function in the editor so that given n and k, it returns the maximum a&b < k.

HackerRank Day 6: Bitwise Operators 10 days of javascript solution

HackerRank Day 6: Bitwise Operators 10 days of javascript problem solution.

'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
    inputString += inputStdin;
});

process.stdin.on('end', _ => {
    inputString = inputString.trim().split('n').map(string => {
        return string.trim();
    });
    
    main();    
});

function readLine() {
    return inputString[currentLine++];
}
function getMaxLessThanK(n,k) {
    var max=0;
    for(let i=1;i<=n;i++) {
        for(let j=i+1;j<=n;j++) {
            var x = i&j;
            if(x > max & x < k){
                max = x;
            }
        }
    }
    return(max);
}


function main() {
    const q = +(readLine());
    
    for (let i = 0; i < q; i++) {
        const [n, k] = readLine().split(' ').map(Number);
        
        console.log(getMaxLessThanK(n, k));
    }
}
10 day of javascript coding problems solutions

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